Absence diminishes small loves and increases great ones, as the wind blows out the candle and fans the bonfire. François de La Rochefoucauld

From Wikipedia:

François VI, Duc de La Rochefoucauld, Prince de Marcillac (15 September 1613 – 17 March 1680) was a noted French author of maxims and memoirs. The view of human conduct his writings describe has been summed up by the words "everything is reducible to the motive of self-interest", though the term "gently cynical" has also been applied.[1]Born in Paris in the Rue des Petits Champs, at a time when the royal court was oscillating between aiding the nobility and threatening it, he was considered an exemplar of the accomplished 17th-century nobleman. Until 1650, he bore the title of Prince de Marcillac.